In an electron microscope the acclerating voltage is increased from 20kv to 80kv. The resolving power of the microscope will become

Options

A. Doubled
B. Halved
C. Quadrupted
D. Tripled

Explanation

To solve the problem of how the resolving power of an electron microscope changes when the accelerating voltage is increased from 20 kV to 80 kV, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Relationship**: The resolving power (R) of an electron microscope is directly proportional to the square root of the accelerating voltage (V). Mathematically, this can be expressed as:
\[ R \propto \sqrt{V} \]
...